BitMore than 3,000 years ago, in Tollense Valley, two ancient armies clashed. Tollense Valley is a river valley in what’s now northern Germany.
No one is sure who took part in the conflict or the disagreement that led to the bloodshed—Europe’s earliest-known battle, and the largest from the time.
-- https://www.nationalgeographic.com/history/article/arrowheads-europe-oldest-battle-tollense
